• Title/Summary/Keyword: Regression testing

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Effects of Elements of Package Design On Consumer Response: Herbal Shampoo Product (포장 디자인의 구성 요소가 소비자 반응에 미치는 영향(한방 샴푸 중심으로))

  • Lee, Yun-Sun
    • Journal of the Korean Graphic Arts Communication Society
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    • v.30 no.2
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    • pp.47-58
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    • 2012
  • The purpose of this study is to provide how various elements of package design affect on consumer response. Those consumers who is living at Sung-nam district and who is using or have used herbal shampoo were selected as respondents for this research. For testing hypotheses. frequency analysis, reliability analysis, and multi regression analysis were utilized with SPSS 12. All elements of package design influenced on brand attitude and purchasing intention. Typography is the most effective element influencing on brand attitude, while illustration is on purchasing intention. This result could be a useful reference for package designer and brand manager to trigger positive brand attitude and purchasing intention.

A Simple Method for Testing Freezing Resistance Based on Chlorophyll Fluorescence in Tea (Camellia sinensis L.)

  • Chun, Jong-Un;Jeong, In-Ho;Choi, Hyoung-Kog
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.45 no.5
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    • pp.322-327
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    • 2000
  • For the stable production of high quality tea, the freezing resistance is a very important character. Most of the farmers have planted out-pollinated seeds that are not genetically pure. So, with small sample, a quick and simple method is required to test freezing resistance of lots of germ-plasm and early generation of hybrids. The absorbances(A530 nm) of TTC reduction solution at -5$^{\circ}C$ were positively correlated with resistance to photoinhibition of PSII in 6 hour photoinhibitory treatments, being significantly fitted by simple linear regression ($R^2$=${0.64}^{**}$). Chlorophyll fluorescence measured by Fv/Fm was found to be very useful in evaluating the relative levels of freezing resistance in tea.

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A Study on Determining Factors of Hull Insurance Rate (선박보검과준의 결정요인에 관한 연구)

  • 김경건;민성규
    • Journal of the Korean Institute of Navigation
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    • v.18 no.4
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    • pp.59-81
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    • 1994
  • Korean property and liability insurance companies have underwrited hull insurance without proper undrewriting ability. But after April 1996. in case of Korean insurance market being opened the companies have to make hull insurance rate by themselves. Accordingly, in this study, the writer embodies important factors in making hull insurance rate by an empirical survey. In empirical survey, the writer used a questionnaire, 74 proper data was obtained from 96 officers working in making hull insurance rate in 12 Korean property and liablity insurance companies and 24 the foreign companies at home. Reliability was tested by Cronbach's Alpha and a conceptual validity by Factor Analysis. Hypothesis estabilished in this study was tested by Correlation and Multiple Regression Analysis. Results of testing hypothesis are as follows: Firstly, the traits of insurer and the assured influence significantly(P<0.05) on making hull insurance rate. Secondly, expected loss ratio, ship manager, ship's age, insured amount, level of the cost of repairing and salvage, shipowner, period of insurance, level of overseas rating, profit and expense, trading limits, ship's classification, conditions of insurance, and ship's size influence significantly(P<0.05) on making hull insurance rate.

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Fast Speaker Adaptation and Environment Compensation Based on Eigenspace-based MLLR (Eigenspace-based MLLR에 기반한 고속 화자적응 및 환경보상)

  • Song Hwa-Jeon;Kim Hyung-Soon
    • MALSORI
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    • no.58
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    • pp.35-44
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    • 2006
  • Maximum likelihood linear regression (MLLR) adaptation experiences severe performance degradation with very tiny amount of adaptation data. Eigenspace- based MLLR, as an alternative to MLLR for fast speaker adaptation, also has a weak point that it cannot deal with the mismatch between training and testing environments. In this paper, we propose a simultaneous fast speaker and environment adaptation based on eigenspace-based MLLR. We also extend the sub-stream based eigenspace-based MLLR to generalize the eigenspace-based MLLR with bias compensation. A vocabulary-independent word recognition experiment shows the proposed algorithm is superior to eigenspace-based MLLR regardless of the amount of adaptation data in diverse noisy environments. Especially, proposed sub-stream eigenspace-based MLLR with bias compensation yields 67% relative improvement with 10 adaptation words in 10 dB SNR environment, in comparison with the conventional eigenspace-based MLLR.

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Change Impact Analysis to Java Software for Regression Testing (회귀 시험을 위한 Java 소프트웨어의 수정영향 분석)

  • Zheng, Hui-Ling;Kim, Sang-Woon;Kwon, Yong-Rae
    • Proceedings of the Korean Information Science Society Conference
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    • 2007.10b
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    • pp.137-142
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    • 2007
  • 객체지향 소프트웨어에서의 회귀 시험은 정확성과 효율성의 측면에서 그 수정영향 분석을 할 때, 시험의 기본 단위를 다양하게 하여 접근한다 클래스, 메소드 및 문장 단위의 수정영향 분석 기법을 살펴 볼 때 메소드를 하나의 시험 단위로 보는 기법이 비교적 효율적이고 효과적이라고 판단된다. 본 논문에서는 Java 소프트웨어의 메소드 단위에서의 회귀 시험을 위한 효율적인 수정영향 분석 기법을 제안하기 위해 수정의 의존관계를 분석하고 발생 가능한 모든 수정을 시험을 유발하는 수정과 그럴지 않은 수정으로 구분한다. 시험을 유발하는 수정에 대한 수정영향 분석만을 통해 중복 영향 분석을 피해 효율성을 높인다. 또한 본 논문에서는 수정영향 분석의 자동화를 위한 설계 및 프로토타입을 제안한다.

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Nondestructive Evaluation of Concrete Strength Considering Aging Effect (재령을 고려한 콘크리트의 비파괴강도평가)

  • Kim, Young-Jin;Lee, Sang-Min;Choi, Hong-Shik
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.3 no.3
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    • pp.157-165
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    • 1999
  • The nondestructive testing methods are commonly used to determine the in-situ compressive strength of concrete. The correlation curves to evaluate the effect of aging on the development of concrete strength was proposed. Thirty two ${\Phi}10{\times}20cm$ cylinder specimens were cast from 5 batches having different strength levels. The correlation curves for rebound hammer method, ultrasonic pulse velocity method and combined method were derived from the laboratory tests and multiple regression analysis. To account for the change of condition such as surface hardness, internal moisture contents, the aging coefficients are applied to the correlation curves. From the comparison the nondestructive strength with the core strength taken from the existing reinforced concrete structures, the validity of the proposed correlation curves are verified.

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Implementation of the Test Agent System with Rule-Based System (규칙 기반 시스템을 이용한 테스트 에이전트 시스템 구현)

  • 최정은;최병주
    • Proceedings of the Korean Information Science Society Conference
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    • 1999.10a
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    • pp.611-613
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    • 1999
  • 테스터의 간섭없이 테스트를 수행할 수 있는 새로운 테스트 도구인 테스트 에이전트 시스템을 구현하였다. 이 시스템에서 테스터는 테스터 이름, 테스트 시간을 입력하고, 테스트 대상을 선택 후, 그 밖에 테스트에 필요한 정보를 입력하고 나면 테스트 에이전트 시스템이 스스로 테스트를 수행한 후 각 테스트 레벨에 대한 테스트 항목의 테스트케이스와 Quality 측정치를 테스트결과로 받아 볼 수 있다. 이 테스트 에이전트 시스템은 3개의 에이전트로 구성이 되어 있고 각 에이전트들은 에이전트의 특성인 자율성, 사회성, 지능성을 가지고 있다. 특히 지능성을 나타내 주는 것을 규칙 기반 시스템을 이용하여 구현하였다. 'User Interface Agent'에는 '리그래션 테스트 대상 판단 규칙'과 'Test History 크기 관리 규칙'이 있고, 'Test Case Selection '||'&'||' Testing Agent'에는 테스트케이스를 선택하는 데에 적용하는 '중복성 제거 규칙'과 '일관성 있는 테스트케이스 선택 규칙'이 있다. "Regression Test Agent'에서는 리그래션 테스트 관련 항목 찾는 규칙'이 있어 각 에이전트들의 지능성을 뒷받침해 준다. 본 논문에서는 각 규칙들을 술어 논리로 표현하여 제시하였고, 구현한 테스트 에이전트 시스템의 Prototype을 기술한다.

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Modeling sulfuric acid induced swell in carbonate clays using artificial neural networks

  • Sivapullaiah, P.V.;Guru Prasad, B.;Allam, M.M.
    • Geomechanics and Engineering
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    • v.1 no.4
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    • pp.307-321
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    • 2009
  • The paper employs a feed forward neural network with back-propagation algorithm for modeling time dependent swell in clays containing carbonate in the presence of sulfuric acid. The oedometer swell percent is estimated at a nominal surcharge pressure of 6.25 kPa to develop 612 data sets for modeling. The input parameters used in the network include time, sulfuric acid concentration, carbonate percentage, and liquid limit. Among the total data sets, 280 (46%) were assigned to training, 175 (29%) for testing and the remaining 157 data sets (25%) were relegated to cross validation. The network was programmed to process this information and predict the percent swell at any time, knowing the variable involved. The study demonstrates that it is possible to develop a general BPNN model that can predict time dependent swell with relatively high accuracy with observed data ($R^2$=0.9986). The obtained results are also compared with generated non-linear regression model.

Mediating Effects of Workplace Learning and Self-efficacy on the Relationship between Technostress and Job Satisfaction of Convalescent Hospital Nurses

  • Woo, Chung Hee;Park, Ju Young
    • International journal of advanced smart convergence
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    • v.10 no.4
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    • pp.141-148
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    • 2021
  • This study was tried to explore the mediating effect of workplace learning and self-efficacy on the relationship between technostress and job satisfaction in convalescent hospital nurses. Data were collected from 149 nurses working at one of 10 convalescent hospitals located in Korea's D region and between July 20 and August 12, 2019 and analyzed using SPSS 24.0. The mediating effects of workplace learning and self-efficacy in the relationship between technostress and job satisfaction were investigated by conducting hierarchical regression analysis and testing for significance based on bootstrapping p values. We found that workplace learning had a complete mediating effect, and self-efficacy a partial mediating effect, in the relationship between technostress and job satisfaction in convalescent hospital nurses. Exploring diverse factors and environmental features affecting job satisfaction in convalescent hospital nurses is highly relevant to clinicians, especially given the gradually increasing number of convalescent hospitals, changes during the era of technology fusion, and the strategic demands arising from an aging society.

Genetic Basis of Early-onset Developmental and Epileptic Encephalopathies

  • Hwang, Su-Kyeong
    • Journal of Interdisciplinary Genomics
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    • v.3 no.1
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    • pp.13-20
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    • 2021
  • Developmental and epileptic encephalopathies are the most devastating early-onset epilepsies, characterized by early-onset seizures that are often intractable, electroencephalographic abnormalities, developmental delay or regression, and various comorbidities. A large number of underlying genetic variants of developmental and epileptic encephalopathies have been identified over the past few decades. However, the most thorough sequencing studies leave 60-65% of patients without a molecular diagnosis. This review explores the genetic basis of developmental and epileptic encephalopathies that start within the first year of life, including Ohtahara syndrome, early myoclonic encephalopathy, epilepsy of infancy with migrating focal seizures, infantile spasms, and Dravet syndrome. The purpose of this review is to give an overview and encourage the clinicians to start considering genetic testing as an important investigation along with electroencephalogram for better understanding and management of developmental and epileptic encephalopathies.